Automotive

Free automotive calculators for fuel economy and running costs, including mpg to L/100 km conversions and what each figure leaves out of the sum.

9 calculators

Fuel & running costs

Fuel Cost CalculatorFuel cost for a trip from distance, economy and price.Gas Mileage CalculatorMPG, L/100 km and cost per mile from a fill-up.Fuel Consumption CalculatorFuel consumption in mpg, L/100km and km/L.Speed Distance Time CalculatorSolve for speed, distance or time from the other two.

Vehicle specs

Engine Displacement CalculatorEngine displacement from bore, stroke and cylinders.Engine Horsepower CalculatorEngine horsepower from torque and RPM, in hp and kW.Gear Ratio CalculatorGear ratio and output speed from tooth counts.Speedometer Gear CalculatorSpeedometer gear teeth for a tire size and axle ratio.Wheel Offset CalculatorWheel offset and backspacing changes from a new rim.

Other categories

Every calculator on CalcMax, grouped by what you are trying to work out.

MathPercentages, fractions, geometry, algebra and number bases.FinanceLoans, mortgages, interest, tax and investment returns.PhysicsMotion, forces, electricity, thermodynamics and optics.Health & FitnessBMI, calories, body fat, heart rate and nutrition targets.StatisticsAverages, standard deviation, probability and grade curves.Date & TimeAge, date differences, durations, time zones and conversions.ConstructionConcrete, gravel, mulch, paint, tile and square footage.BiologyGenetics, populations, microbiology and animal dosing.SportsPace, splits, running and cycling performance metrics.ChemistryMolarity, dilutions, reactions and stoichiometry.Food & CookingRecipe scaling, baking ratios, cooking conversions.ElectronicsOhm's law, resistors, wire gauge, batteries and signals.OtherBra sizing and random password generation.